Red Flag Warning
Issued by NWS Cheyenne, WY

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000
WWUS85 KCYS 190112
RFWCYS

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
712 PM MDT SUN SEP 18 2016

...CRITICAL FIRE WEATHER CONDITIONS WILL CONTINUE ON MONDAY FOR
MOST AREAS ABOVE 5000 FEET...

.ALTHOUGH RED FLAG CONDITIONS ARE EXPECTED TO COME TO AN END BY
THIS EVENING. HUMIDITY RECOVERIES WILL AGAIN BE POOR OVERNIGHT
WITH GUSTY WINDS AT TIMES OVER THE HIGHER ELEVATIONS. ANOTHER DAY
OF CRITICAL CONDITIONS EXPECTED ON MONDAY FOR MORE ELEVATIONS
ABOVE 5000 FEET IN SOUTHEAST WYOMING.

NEZ311>313-WYZ301-302-190215-
/O.CAN.KCYS.FW.W.0028.000000T0000Z-160919T0200Z/
PINE RIDGE/NEBRASKA NATIONAL FOREST/OGLALA NATIONAL GRASSLANDS-
BOX BUTTE/SOUTH SIOUX-
SCOTTS BLUFF NATIONAL MONUMENT/WILDCAT HILLS-
NIOBRARA/LOWER ELEVATIONS OF CONVERSE/THUNDER BASIN NATIONAL
GRASSLAND-NORTH LARAMIE RANGE/MEDICINE BOW NF-
712 PM MDT SUN SEP 18 2016

...RED FLAG WARNING IS CANCELLED FOR GUSTY WINDS AND LOW RELATIVE
HUMIDITIES FOR FIRE WEATHER ZONES 301...302...311...312 AND
313...

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS CANCELLED THE RED
FLAG WARNING.

RELATIVE HUMIDITIES HAVE RECOVERED ABOVE 20 TO 25 PERCENT ACROSS
EAST CENTRAL WYOMING ALONG WITH WESTERN NEBRASKA. LIGHT AND
VARIABLE WINDS ARE EXPECTED THROUGH TONIGHT...THEREFORE...THE RED
FLAG WARNING HAS BEEN CANCELLED.

$$

WYZ303>310-191100-
/O.CON.KCYS.FW.W.0028.000000T0000Z-160920T0200Z/
CENTRAL AND NORTHERN CARBON/FERRIS-SEMINOE-SHIRLEY MOUNTAINS-
SOUTHWEST CARBON COUNTY-SIERRA MADRE RANGE/MEDICINE BOW NF-
UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE/MEDICINE BOW NF-
LARAMIE VALLEY/SHIRLEY BASIN-SOUTH LARAMIE RANGE/MEDICINE BOW NF-
PLATTE/GOSHEN/CENTRAL AND EASTERN LARAMIE-
712 PM MDT SUN SEP 18 2016

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT MONDAY FOR
GUSTY WINDS AND LOW HUMIDITIES FOR FIRE WEATHER ZONES 303...304...
305...306...307...308...309 AND 310...

* AFFECTED AREA...FIRE WEATHER ZONES 303 THROUGH 310.

* WIND...WEST TO SOUTHWEST WINDS SUSTAINED AT 10 TO 20 MPH TONIGHT
  WITH OCCASIONAL GUSTS AROUND 25 MPH. WINDS WILL INCREASE 15 TO
  25 MPH WITH GUSTS TO 30 MPH BY MONDAY AFTERNOON.

* HUMIDITY...MINIMUM AFTERNOON HUMIDITIES OF 12 TO 17 PERCENT.

* NIGHTTIME HUMIDITY RECOVERIES...25 TO 40 PERCENT ACROSS MOST
  AREAS. RECOVERIES WILL BE HIGHER ABOVE 9000 FEET.

* IMPACTS...THE COMBINATION OF GUSTY WINDS AND VERY LOW
  HUMIDITIES WILL CREATE CONDITIONS FAVORABLE FOR RAPID FIRE
  GROWTH. OUTDOOR BURNING IS NOT RECOMMENDED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW....OR WILL SHORTLY. A COMBINATION OF
STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN
CONTRIBUTE TO EXTREME FIRE BEHAVIOR.

&&

$$



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